content: /**
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software distributed under the License is
   * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
   * the License for the specific language governing permissions and limitations under the License.
   */
  
  package io.reactivex.observable.internal.operators;
  
  import java.util.concurrent.atomic.AtomicInteger;
  
  import io.reactivex.common.Disposable;
  import io.reactivex.common.internal.disposables.SequentialDisposable;
  import io.reactivex.observable.*;
  
  public final class ObservableRepeat<T> extends AbstractObservableWithUpstream<T, T> {
      final long count;
      public ObservableRepeat(Observable<T> source, long count) {
          super(source);
          this.count = count;
      }
  
      @Override
      public void subscribeActual(Observer<? super T> s) {
          SequentialDisposable sd = new SequentialDisposable();
          s.onSubscribe(sd);
  
          RepeatObserver<T> rs = new RepeatObserver<T>(s, count != Long.MAX_VALUE ? count - 1 : Long.MAX_VALUE, sd, source);
          rs.subscribeNext();
      }
  
      static final class RepeatObserver<T> extends AtomicInteger implements Observer<T> {
  
          private static final long serialVersionUID = -7098360935104053232L;
  
          final Observer<? super T> actual;
          final SequentialDisposable sd;
          final ObservableSource<? extends T> source;
          long remaining;
          RepeatObserver(Observer<? super T> actual, long count, SequentialDisposable sd, ObservableSource<? extends T> source) {
              this.actual = actual;
              this.sd = sd;
              this.source = source;
              this.remaining = count;
          }
  
          @Override
          public void onSubscribe(Disposable s) {
              sd.replace(s);
          }
  
          @Override
          public void onNext(T t) {
              actual.onNext(t);
          }
          @Override
          public void onError(Throwable t) {
              actual.onError(t);
          }
  
          @Override
          public void onComplete() {
              long r = remaining;
              if (r != Long.MAX_VALUE) {
                  remaining = r - 1;
              }
              if (r != 0L) {
                  subscribeNext();
              } else {
                  actual.onComplete();
              }
          }
  
          /**
           * Subscribes to the source again via trampolining.
           */
          void subscribeNext() {
              if (getAndIncrement() == 0) {
                  int missed = 1;
                  for (;;) {
                      if (sd.isDisposed()) {
                          return;
                      }
                      source.subscribe(this);
  
                      missed = addAndGet(-missed);
                      if (missed == 0) {
                          break;
                      }
                  }
              }
          }
      }
  }
  